Green tea mechanism of action in fighting different types of cancer

Abstract

Eat and drink natural to fight cancer. Natural products are important therapeutic effects with low toxicity, and could be used in cancer chemoprevention. This is the most important healthy lifestyle behaviors in the 21 century. More than half patients use vitamins or herbs concurrently with conventional anticancer treatment. Flavonoids or polyphenols existing in vegetables, fruits and beverages are known by their antioxidant properties and considered as anti-cancer agents. Examples of these include green tea. Green tea composed of flavonoid compounds with phenolic structures. These phytochemicals are highly reactive with other compounds, such as reactive oxygen species and biologic macromolecules, to neutralize free radicals or initiate biological effects. Phenolic phytochemicals with promising properties to benefit human health includes a group of polyphenol compounds, called catechins, found in green tea. This article summarizes the findings of studies using green tea polyphenols as chemopreventive and discusses the possible mechanisms of action in fighting different types of cancer.